package org.edu.dao;

import java.util.List;

import org.edu.model.Lesson;

public interface LessonDao {
	
	void save(Lesson lesson) throws Exception;

	void update(Lesson lesson) throws Exception;

	void remove(Lesson lesson) throws Exception;

	List<Lesson> lessons();

	Lesson findById(Long lesson_id) throws Exception;

}
